A model study of vibrational excitation of carbon dioxide molecule by slow electrons: the role of wave packet sliding from the ridge

1996 ◽  
Vol 37 (4) ◽  
pp. 305-313 ◽  
Author(s):  
A. K. Kazansky ◽  
L. Yu Sergeeva
Keyword(s):  
Carbon Dioxide ◽  
Wave Packet ◽  
Vibrational Excitation ◽  
Carbon Dioxide Molecule ◽  
Model Study ◽  
Slow Electrons

Strong-field-induced wave packet dynamics in carbon dioxide molecule

2016 ◽  
Vol 194 ◽  
pp. 463-478 ◽  
Author(s):  
Artem Rudenko ◽  
Varun Makhija ◽  
Aram Vajdi ◽  
Thorsten Ergler ◽  
Markus Schürholz ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Wave Packet ◽  
Strong Field ◽  
Vibrational Excitation ◽  
Chem Phys ◽  
Final State ◽  
Vibrational Dynamics ◽  
Carbon Dioxide Molecule ◽  
Vibrational Excitations ◽  
Ionic States

Temporal evolution of electronic and nuclear wave packets created in strong-field excitation of the carbon dioxide molecule is studied employing momentum-resolved ion spectroscopy and channel-selective Fourier analysis. Combining the data obtained with two different pump-probe set-ups, we observed signatures of vibrational dynamics in both, ionic and neutral states of the molecule. We consider far-off-resonance two-photon Raman scattering to be the most likely mechanism of vibrational excitation in the electronic ground state of the neutral CO2. Using the measured phase relation between the time-dependent yields of different fragmentation channels, which is consistent with the proposed mechanism, we suggest an intuitive picture of the underlying vibrational dynamics. For ionic states, we found signatures of both, electronic and vibrational excitations, which involve the ground and the first excited electronic states, depending on the particular final state of the fragmentation. While our results for ionic states are consistent with the recent observations by Erattupuzha et al. [J. Chem. Phys.144, 024306 (2016)], the neutral state contribution was not observed there, which we attribute to a larger bandwidth of the 8 fs pulses we used for this experiment. In a complementary measurement employing longer, 35 fs pulses in a 30 ps delay range, we study the influence of rotational excitation on our observables, and demonstrate how the coherent electronic wave packet created in the ground electronic state of the ion completely decays within 10 ps due to the coupling to rotational motion.

The quadrupole moment of the carbon dioxide molecule

1963 ◽  
Vol 273 (1353) ◽  
pp. 275-289 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Atom ◽  
Quadrupole Moment ◽  
Polarizability Tensor ◽  
Sulphur Hexafluoride ◽  
Inhomogeneous Electric Field ◽  
Carbon Dioxide Molecule ◽  
Method Of Measurement ◽  
The Difference

A direct measurement of the magnitude and sign of the quadrupole moment of the carbon dioxide molecule has been made by determining the birefringence induced in gaseous C0 2 by an inhomogeneous electric field. The method of measurement and the experimental details are described. The observable is the product of the molecular quadrupole moment 0 and the difference between parallel and perpendicular components of the optical polarizability tensor. F o r CO 2 , this quantity was found to have the value — (9.1±0.5)x 10 -50 e.s.u. can be determined by other methods, but unfortunately the present uncertainty in this quantity is greater than that of the product. The most satisfactory value of a a 8 -a 1 is taken to be 2.2 x 10 -24 cm 3 , giving for the molecular quadrupole moment of CO 2 — 4.1 x 10 -26 e.s.u., the sign indicating that the oxygen atoms are negative with respect to the carbon atom. The role of the ‘ quadrupole polarizability ’ of the molecule in complicating the interpretation of the experimental results is discussed, and experiments on argon and sulphur hexafluoride used to provide an estimate of its effect in the case of CO 2 .

Unraveling the Role of Zinc on Bimetallic Fe5C2–ZnO Catalysts for Highly Selective Carbon Dioxide Hydrogenation to High Carbon α-Olefins

ACS Catalysis ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2121-2133
Author(s):  
Chao Zhang ◽  
Chenxi Cao ◽  
Yulong Zhang ◽  
Xianglin Liu ◽  
Jing Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Carbon ◽  
Carbon Dioxide Hydrogenation

Metal-organic frameworks for electrochemical reduction of carbon dioxide: The role of metal centers

2020 ◽  
Vol 40 ◽  
pp. 156-170 ◽  
Author(s):  
Ping Shao ◽  
Luocai Yi ◽  
Shumei Chen ◽  
Tianhua Zhou ◽  
Jian Zhang
Keyword(s):  
Carbon Dioxide ◽  
Electrochemical Reduction ◽  
Metal Organic Frameworks ◽  
Metal Centers ◽  
Metal Organic

scholarly journals The Role of Carbon Dioxide Removal in Net-zero Emissions Pledges

2021 ◽  
pp. 100043
Author(s):  
Gokul Iyer ◽  
Leon Clarke ◽  
Jae Edmonds ◽  
Allen Fawcett ◽  
Jay Fuhrman ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Removal ◽  
Net Zero

scholarly journals Soil carbon dioxide fluxes to atmosphere: the role of rainfall over CO2 transport

2020 ◽  
pp. 104854
Author(s):  
Isabelle Delsarte ◽  
Grégory Cohen ◽  
Marian Momtbrun ◽  
Patrick Höhener ◽  
Olivier Atteia
Keyword(s):  
Carbon Dioxide ◽  
Soil Carbon ◽  
Carbon Dioxide Fluxes ◽  
Soil Carbon Dioxide ◽  
Co2 Transport
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